baber/WOPTO huggingface dataset:
Patent GB-1590771-A (GB)
Title: Heating apparatus
IPC: F24B5/02
Filed: 1978-02-07
Abstract: A heat-conducting cabinet (10) contains a primary combustion chamber (16) and a secondary combustion chamber (30) communicating with said primary chamber (16). A vertical baffle (28) oriented from top to bottom separates said combustion chambers. Part of this baffle (28) stops short of a lower surface of the cabinet to create an opening (31) which connects said primary and secondary chambers and allows the gases to circulate between them. A primary feed pipe (20) introduces air into said primary chamber (16). A secondary feed pipe (32) positioned at least along the baffle (28) oriented from the top introduces preheated air into the secondary combustion chamber (30) through the opening (31). An opening (26) through which the combustion products leave is located at the top of the cabinet (10) and is in communication with the secondary combustion chamber (30). The primary feed pipe (20) introduces the air into the primary combustion chamber (16) through virtually the whole of its width. <IMAGE>
Patent GB-913739-A (GB)
Title: Improvements in or relating to electrical contact members
IPC: A47B9/00
Filed: 1960-02-11
Abstract: 913,739. Switch contacts. ELECTROCOMMUTATION, ELCOM. Feb. 11, 1960 [Feb. 19, 1959], No. 4855/60: Class 38 (5). A rigid insulating support comprises two layers 1, 2, with apertures which partially overlap and receive the relatively displaced integral parts 4, 4<SP>1</SP> of a contact, which may be cylindrical as shown, or of flat section (Figs. 5 to 8, not shown), the two layers being subsequently riveted together.
Patent GB-766887-A (GB)
Title: Improvements relating to the purification of salicylic acid and other substances
Inventor: BREEZE DAVID JOHN
IPC: C07C51/43
Filed: 1954-02-19
Abstract: In a process for the purification of a sublimable organic chemical substance, e.g. salicyclic acid, benzoic acid or anthracene, the substance in the form of a vapour that contains entrained non-volatile impurities is passed through an electrostatic precipitator and the impurities are thereby removed. Salicylic acid, e.g. containing non-volatile impurities is introduced in a finely divided state into a carrier gas stream, e.g. carbon dioxide, or nitrogen, and the mixture which is incapable of causing an explosion, is heated to volatilize the salicylic acid.  Alternatively salicylic acid may be volatilized into a stream of hot carrier gas.  The mixture of gas, vapour and non-volatile impurities is then passed through an electrostatic precipitator, heated to prevent condensation of salicylic acid, where the impurities are removed.  The apparatus may be made of aluminium or stainless steel.  The carrier gas may be re-cycled but it may be necessary to prevent the build-up of volatile impurities, e.g. of phenol therein.  In an example, salicylic acid is introduced into a stream of carbon dioxide by means of a screw conveyer and volatilized by passing the mixture through a heated stainless steel tube.  The stream of gas and vapour is then passed through an electrostatic precipitator consisting of steel cylinder with a central electrode in the form of a bar of spare cross-section. The precipitator and the piping between the heater and precipitator are steam-heated.  Salicylic acid vapour emerging from the precipitator is condensed with a condenser fitted with a vibrator.
Patent GB-179666-A (GB)
Title: Improvements in flanges for the warp beams of looms or for other beams or rollers used for other purposes
IPC: D02H13/28
Filed: 1921-02-12
Abstract: 179,666. Smith, A., and Shackleton, G. W. Feb. 12,1921. Securing flanges on shafts.-The flanges 3, Fig. 1, of warp or other beams or rollers are provided with stamped sheet-metal clips or fixing-devices c, Figs. 1 and 7, each having a curved hub portion 2 engaging the beam and an outstanding portion d at one end bolted to the bent end f of the adjoining clip &c. and bent at right-angles to form a base portion a fixable to the flange body by rivets or bolts or by " spot " welding. Three clips &c. may be arranged around the central opening 3<a> of the flange. The part g of the clip &c. lies beyond the periphery of the roller &c. and the part 2 is curved to the contour of the roller &c. upon which the clips &c. grip. The extreme outer end f<1> of the part f is further bent to prevent excessive movement under the action of the bolts h. According to the Provisional Specification, two clips &c. or more than three clips &c. may be used, and they may be formed with radiating parts, and the curved part of the clip may be made in one continuous curve. A part of the inner surface may be covered with leather &c.
Patent GB-694819-A (GB)
Title: Improvements in or relating to sliders for slide fasteners
Inventor: EVANS HERBERT
IPC: A44B19/30
Filed: 1951-03-01
Abstract: 694,819. Sliding-clasp fasteners. FLEX FASTENERS, Ltd. Feb. 18, 1952 [March 1, 1951], No. 5000/51. Class 44. A slider for a slide fastener comprises a slider body and pull member, the slider body having two slider wings and a bridge member on at least one of the wings, the bridge member linking a retaining portion of the pull member to the slider body, the bridge member having a slot extending in a direction inclined to the direction in which the slider is to be moved for opening or closing the fastener, for enabling the retaining portion of the pull member to be passed through the slot when the slider is being assembled, to lie between the bridge member and the slider wing carrying the bridge member, means being provided for normally preventing the retaining portion of the pull member from escaping from its position between the bridge member and the slider wing. In the arrangement shown, in which the slider comprises upper and lower wings 1 and 2 and a neck portion 3, the upper wing 1 is provided with an integral bridge member 5 having a slot 6 therein dividing the bridge member into parts 5a and 5b, each of which is formed with a cam surface 9 adjacent the upper wing. The width of the slot 6 is sufficient to allow the insertion of a retaining portion 15 of a pull member 13. A cap 16, having resilient side walls 17 formed with recesses 18, protrusions 21 complementary to indentations 11 on the bridge member 5 and fingers 22, complementary to windows 12 in the wing 1 is assembled over the bridge member 5, with a coil spring 8 located in a hole 7 on the part 5a and bearing on the underside of the cap. The arrangement is such that when a pull is exerted on the member 13, the portion 15 rides up one or the other of the cam surfaces 9 and tilts the cap 16 against the spring 8 about the protrusions 21 to retract the fingers from their normal locking position between interlocking members of the slide fastener. A groove 10 in the upper wing 1 facilitates the tilting movement of the cap. In modifications Figs. 6 and 7 (not shown), the spring 8 may be replaced by a flat spring and the cap may be pivoted about a pin extending through the part 5a. The groove 10 may completely surround and accommodate the free edges of the walls 17. The slider may be non-locking by the omission of the fingers 22 and if desired the coil or flat springs. In this case additional connecting means may be provided between the cap and the part 5b. Alternatively, the cap may be omitted and the slot 6 closed by soldering or swaging or spring means may be provided between the portion 15 and the bridge member 5 to prevent disengagement of the pull member 13.
Patent GB-854288-A (GB)
Title: Improved variable output voltage transformer
IPC: H01F29/06
Filed: 1957-02-14
Abstract: 854,288. Transformers; transformer arrangements. LECADRE, M. R. A. Feb. 14, 1957 [Oct. 19, 1956], No. 5045/57. Classes 38 (2) and 38 (4). A variable output transformer arrangement comprises a magnetic core 23 having a primary winding 24 and a bale rotatable secondary winding 26 which has one end 28 connected to an open ring 29. A movable brush 31 is arranged to move vertically and contacts the bale turns as the winding rotates. The ring 29 which moves with the rotatable winding is contacted by two brushes 42, 43 connected to the secondary winding 41 of an auxiliary transformer which is so energized that when the brushes engage the ends of the ring the output voltage of the auxiliary transformer is equal and opposite to that induced in the ring. The output voltage of the arrangement is derived between the brush 31 and the centre-tap 46 of the auxiliary transformer. This transformer is energized by a tapping on the main primary winding 24, or alternatively by a separate winding or the main supply. In an alternative arrangement (Fig. 5, not shown), the ring 29 is split into four separate segments.
Patent GB-939800-A (GB)
Title: Improvements in or relating to nuclear fuel elements
IPC: G21C3/06
Filed: 1961-02-10
Abstract: 939,800. Nuclear fuel elements. MITSUBISHI ATOMIC POWER INDUSTRIES Inc. Feb. 10, 1961 [Feb. 11, 1960], No. 5071/61. Drawings to Specification. Class 39 (4). In a method of preparing a cladding tube for containing powdered nuclear fuel material a surface layer is removed from the internal curved surface of the tube, so as to leave the said surface substantially smooth and free from minute structural defects. The layer may be removed by electrolytic polishing, mechanical polishing such as buffing, by chemical dissolution or by physical means utilizing ultra-sonic waves. Stainless steel tubes can be electrolytically polished using a solution comprising one litre of orthophosphoric acid and 50 gms. litre of chromium trioxide. The thickness of the layer removed should be at least five microns in the case of a tube of outside diameter of 9- 13 mm. and thickness of 0.5 to 1 mm. In the case of smaller or thinner tubes the layer may be as thin as two microns.
Patent GB-1477281-A (GB)
Title: Method and apparatus for treating particulate material
IPC: C10B57/08
Filed: 1975-02-06
Abstract: 1477281 Gas/liquid contact with filtration of fines, gas filter CANADIAN PATENTS & DEVELOPMENT Ltd 6 Feb 1975 [22 Feb 1974] 5078/75 Headings B1F and BIT [Also in Division F4]  In a gas/liquid contact process, coarse particle feed, predominantly 30 mesh (U.S.) to ¢" size, is introduced at 2, Fig. 2, and fine particle feed comprising at least 50% 140 mesh to 30 mesh particles, the rest being superfines, is introduced either with the coarse particle feed at 2 or with gas introduced at 4, and the coarse particles, at least a major portion of the fines and a minor portion of the superfines pass downwards to form a packed bed covering gas inlet 24 and gas outlet 26, the remaining fines and superfines being entrained by a major portion of the gas which flows up casing 1 and down substantially unobstructed tube 14 to pass via inlet 24 through the packed bed to gas outlet 26, at least a substantial portion of the entrained particles being filtered by the bed, discharge screw being operated to control the level of the bed. The gas inlet 24 may have louvres 75-80 as shown in Fig. 7, coarse entrained particles being deflected downwards by baffle 70 and not passing to the bed. The process may be used for drying or roasting particulate material, chemically reducing metal oxide with H 2  or CO, desulphurizing stock gas using limestone, or filtering cupola dust using crushed limestone.
Patent GB-511511-A (GB)
Title: Process for the production of synthetic resins
IPC: C08L61/10
Filed: 1938-02-18
Abstract: 511,511. Phenol-aldehyde condensation products. ALBERT PRODUCTS, Ltd. Feb. 18, 1938, No. 5119. Convention date, March 8, 1937. Addition to 409,397. [Class 2 (iii)] Hardenable condensation products of phenols with aldehydes especially phenolalcohols or etherified phenolalcohols are treated at temperatures above 70‹C. with monokydric alcohols in the presence of catalysts that accelerate the hardening of phenol-formaldehyde condensates. Oxyfatty acids, fatty oils, resins, esters of dicarboxylic acids, fatty acids or resin acids are added during or after treatment. Specified catalysts include hydrohalogenic acids, phosphoric acid, sulphuric acid, ammonium chloride, aluminium chloride, acetyl chloride, benzoyl chloride, fatty acid and resinous acid chlorides, chloracetic acid, halogenated acids, alcohols and ketones, mineral acid esters of alcohols such as dibenzyl sulphate, halogenated hydrocarbons such as benzyl chloride, benzodichloride, benzylidene chloride, p-toluene sulphochloride and p-toluene sulphanilide. The excess of the etherifying agent used in preparing the etherified phenolalcohols may be used as the catalyst. In examples:- (1) a cresolformaldehyde condensate is heated with butanol in the presence of orthophosphoric acid and the product blended with ricinoleic acid ; (2) a crystalline condensate of dihydroxydiphenyldimethylmethane and formaldehyde is heated with amyl alcohol and phenol in the presence of acetyl chloride ; (3) a condensation product of formaldehyde and an acetone-phenol condensate (prepared according to Specification 261,522, [ Class 2 (iii)]), is heated with a mixture of butanol and hexanol in the presence of ptoluene sulphochloride and the product blended with Chinese wood oil ; (4) a condensation product of phenol and formaldehyde is etherifled with benzyl chloride and the etherified resin, containing an excess of benzyl chloride, is heated with amyl alcohol, cyclohexanol, octanol, wood oil and sardine oil. The product being diluted with solvent naphtha.
Patent GB-554643-A (GB)
Title: Improvements in electro-magnetic switches for the remote control of electrical mechanisms
IPC: G08C19/20
Filed: 1942-04-17
Abstract: 554,643. Electromagnetic switches. NORRIS, W. H. April 17, 1942, No. 5142. Addition to 547,560. [Class 38 (v)] In an improvement in or modification of the parent Specification, braking or locking means 10a are applied to the inertia member 7 while the armature 2 of the step-by-step magnet 1 is in its attracted position. The armature 2 steps round a shaft 3 carrying the contact member by means of a pawl 6 engaging a ratchet wheel 4 and in the form shown the shaft 3 carries an arm 8 carrying a pawl 8a which slips idly over the teeth of a ratchet wheel 7b on the fly-wheel 7 when the armature is attracted and the braking pawl 10a is applied to teeth on the periphery of the wheel. The pawl 10a releases the wheel when the magnet is de-energized but its inertia prevents movement during a succession of impulses. When the current is finally cut off the wheel will move and a spring 9 acting on the spindle 3 will return it to its original position.
Patent GB-755249-A (GB)
Title: Improvements in or relating to centrifugal pumps
IPC: F04D9/04
Filed: 1954-02-22
Abstract: 755,249. Centrifugal pumps. SYKES, Ltd., H., and PAISH, H. P. S. Jan. 28, 1955 [Feb. 22, 1954], No. 5182/54. Class 110(1) In a centrifugal pump of the-kind which is primed by a vacuum pump connected to the suction side of the centrifugal pump by way of a valve which is closed by a float when the water level in a float chamber connected to the suction pipe of the centrifugal pump rises on completion of priming, the back of the casing of the centrifugal pump is connected to the float chamber so that the vacuum pump can exhaust air from the casing. The suction pipe 1 of the centrifugal pump carries a float chamber 3 which communicates with the suction pipe and contains a float 4. A vacuum pump (not shown) connected to a pipe 7 creates a vacuum in a housing 6 and, through holes 8, in the chamber 3, causing the water level in the chamber 3 and in the centrifugal pump casing 2 to rise until a valve 5 carried by the float 4 closes the lower end of the pipe 7. A pipe 9 running from the upper part of the chamber 3 to a point 10 near the hub of the impeller 11 allows air leaking through a gland 12 to be removed by the vacuum pump.
Patent GB-1212382-A (GB)
Title: Coin operated water vending machines
Inventor: JNR SAM B NORRIS
IPC: G07F13/06
Filed: 1968-02-01
Abstract: 1,212,382. Coin operated liquid dispensing apparatus. FOREMOST-MCKESSON Inc. 1 Feb., 1968, No. 5190/68. Heading G4V. In a vending machine for selectively dispensing either purified or mineral-containing water, mains supply water is purified (e.g. by distillation, or by filters and ion exchange means connected in series with an ultraviolet irradiator) and in response to coin-operated electrical means a predetermined quantity is pumped (Fig. 2) via a meter 52 and a check valve 54 to a mixing point where a controlled quantity of mineral solution 60 may be injected by an adjustable metering pump 64 according to the position of a selector means, which controls the position of a valve 58 to supply an outlet 16 or 22. In an alternative embodiment (Fig. 4) a by-pass line 461 is provided upstream of the purifying means, and sterilized, degasified and filtered mains water is re-injected via a solenoid valve 466, a manually adjustable valve 467 and a check valve 463, instead of mineral solution 60. Conductivity sensing and control means 530, 532 pulse a control valve 457 between partially and fully open positions to control water composition at an outlet 422. Means 122, 112 (Fig. 2) and 453 (Fig. 4) are provided to deactivate the dispensing means and illuminate warning lamps 34, 36 (Fig. 2) when the supply of purified water or mineral solution becomes too low, or when impurities in the purified water stream exceed a certain amount.
Patent GB-721367-A (GB)
Title: Improvements in apparatus for colour printing
IPC: G03F9/00
Filed: 1952-02-27
Abstract: 721,367. Clips. THURMAN, W. A. Feb. 27,1953 [Feb. 27, 1952], No. 5210/52. Class 44. [Also in Group XVI] A clip for use with a printers' chase (see Group XVI) comprises an inverted U-shaped clamp portion adapted to be clamped on to the chase and a pivoted clip member adapted to co-operate with the top of the inverted U- shaped portion to hold a sheet therebetween, the clip, when in its operative position, being of less height than type contained in the chase. The clip comprises an L-member 1 secured to a block 2 bored to receive a clamping screw 3 which engages the outside of the chase. Pivoted to the block 2 and held closed by a leaf spring 5 is a clip member 4 having dowels 6 to register with holes 7 in the member 1, so as to perforate and hold a sheet. Alternatively, the members 4, 1 may have threaded holes near the pivot registering with each other, so that a set screw can tighten the member 4 down on the member 1 and clamp the sheet between them. Two clips may be used and rigidly connected by a bar.
Patent GB-1147040-A (GB)
Title: Improvements in or relating to gas cooled dynamoelectric machine rotors
IPC: H02K3/24
Filed: 1967-02-03
Abstract: 1,147,040. Rotor wedges for gas-cooled dynamo-electric machines. GENERAL ELECTRIC CO. 3 Feb., 1967 [3 March, 1966], No. 5228/67. Heading H2A. A dynamo-electric machine-rotor wedge having a retaining key profile along each side has at least one end grooved to define an arcuate slot extending inwardly from the rotor periphery, the axis of the slot lying in a plane perpendicular to the longitudinal axis of the wedge. As described, in a gas-cooled dynamo-electric machine gap-pickup rotor comprising a plurality of axially-extending peripheral teeth defining conductor-containing slots therebetween, and a plurality of conductor-retaining wedges in each of the slots arranged end-to-end and keyed to the teeth near their radially-outer portions, the abutting ends of two adjacent wedges are recessed to define therebetween an arcuate passage for the flow of coolant gas between the rotor surface and the rotor interior, the axis of the passage lying in a plane substantially parallel to the plane of the abutting ends. As shown, two grooves 9 are formed in the end of a wedge for juxtaposition with equivalent grooves in the end of the abutting wedge to form two arcuate passages, but the " guide vane " 10 may be omitted. The upper portion of the remainder of the end of the wedge is cut and shaped downwards, as shown, to provide the entry to the next circumferentially. adjacent passage (or passages), and between it and the next wedge the intervening tooth top is appropriately grooved. Thus, each complete passage includes surfaces on two circumferentially-adjacent wedges and the intervening tooth. The coolant gas may be hydrogen.
Patent GB-1380648-A (GB)
Title: Ignition systems
IPC: F02P7/067
Filed: 1972-02-04
Abstract: 1380648 Ignition systems; timing ignition ROBERT BOSCH GmbH 4 Feb 1972 [5 Feb 1971] 5231/72 Heading F1B In an I.C. engine ignition system, the spark producing electrical pulses are timed in dependence upon engine operating parameters and are distributed electronically to respective spark plugs. As shown in Fig. 1, an engine speed tachometer 10 and an intake manifold pressure transducer 11  apply their outputs to respective function generators 12, 13 whose outputs are applied to an adder 14. Additional parameters may be utilized, e.g. butterfly valve position, engine temperature, airpressure or air humidity, corresponding transducers and function generators, e.g. 15, being provided. The output voltage of adder 14 is compared at 16 with a sawtooth voltage Uw dependent upon the angle of rotation of the engine crank-shaft determined by a generator 18. When the two voltages are equal a pulse is provided to a gate 36 which is operated by the two outputs of a device 37 connected to the tachometer 10 so that two-spark ignition coils 40, 41 are alternately energized by the pulses from comparator 16 via respective amplifiers 38, 39. At low engine speeds, a speed dependent switch 20 is operated so that ignition is triggered by a generator 19. In an alternative, Fig. 2, the output voltage of adder 14 is compared at 22 with a voltage derived from a potentiometer 23 representing the actual position of a pulse generator 24, the error signal from device 22 being applied to a servomotor 25 which changes the position of the pulse generator 24 to reduce the error. The pulses from generator 24 are applied to the gate 36. In a further alternative, Fig. 3, a sawtooth generator 28 provides an output voltage which is dependent upon the angle of rotation of the crankshaft multiplied by the time for one revolution of the engine, which voltage is compared at 16 with the output voltage of the adder 14. A maximum storage device 27, connected to the output of sawtooth generator 28, provides its output to the function generator 13 and to a function generator 26 whose output is a function of the engine speed. The generator 19 triggers the sawtooth generator 28, and the device 37, and provides the ignition pulses at low engine speeds. An additional gen erator may be provided for triggering the device 37, Fig. 4 (not shown). The transducer 11 and function generator 13 may comprise a pressure box and potentiometer, and the function generator 26, which may comprise a voltage divider, may be connected between generator 28 and comparator 16.
Patent GB-882310-A (GB)
Title: Improvements in or relating to the manufacture of ladies' full-fashioned hose
IPC: D05B27/18
Filed: 1958-02-18
Abstract: 882,310. Sewing; sewing machines. CHADBOURN GOTHAM Inc. Feb. 18, 1958 [Dec. 23, 1957], No. 5232/58. Addition to 882,309. Class 112. The full-fashioned hose of the parent Specification, comprising a seam incorporating no more than eight wales, is produced with a stitch formation incorporating not more than five wales from either selvedge edge and ensuring that the stitches of the seam are sufficiently loose to enable the seam substantially to flatten when the hose is worn. A three-thread overedge seam is used, the needle loops 12 being equal in length to the looper loops 14 and 16, the seam being arranged to include from 3 to 5 wales at each edge. The seam is produced on a cup-feed machine having a needle 18, feed cups 20, 22 and loopers 24, 26. The respective threads 12<SP>1</SP>, 14<SP>1</SP>, 16<SP>1</SP> pass from tensioners 32 over respective wheels 36, 38, 40 freely mounted on a common shaft, the needle thread wheel 36 being of greater diameter than the looper thread wheels to provide the additional amount of thread required for the needle loops. The stitch finger is also made wider than usual to assist in producing the loose stitches. U.S.A. Specification 2,448,774 is referred to.